Long live Qt!

6 files changed, 589 insertions, 0 deletions

diff --git a/examples/painting/transformations/main.cpp b/examples/painting/transformations/main.cpp
new file mode 100644
index 0000000..fa8b0ab
--- /dev/null
+++ b/examples/painting/transformations/main.cpp
@@ -0,0 +1,52 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QApplication>
+
+#include "window.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+    Window window;
+    window.show();
+    return app.exec();
+}
diff --git a/examples/painting/transformations/renderarea.cpp b/examples/painting/transformations/renderarea.cpp
new file mode 100644
index 0000000..a25869b
--- /dev/null
+++ b/examples/painting/transformations/renderarea.cpp
@@ -0,0 +1,173 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "renderarea.h"
+
+//! [0]
+RenderArea::RenderArea(QWidget *parent)
+    : QWidget(parent)
+{
+    QFont newFont = font();
+    newFont.setPixelSize(12);
+    setFont(newFont);
+
+    QFontMetrics fontMetrics(newFont);
+    xBoundingRect = fontMetrics.boundingRect(tr("x"));
+    yBoundingRect = fontMetrics.boundingRect(tr("y"));
+}
+//! [0]
+
+//! [1]
+void RenderArea::setOperations(const QList<Operation> &operations)
+{
+    this->operations = operations;
+    update();
+}
+//! [1]
+
+//! [2]
+void RenderArea::setShape(const QPainterPath &shape)
+{
+    this->shape = shape;
+    update();
+}
+//! [2]
+
+//! [3]
+QSize RenderArea::minimumSizeHint() const
+{
+    return QSize(182, 182);
+}
+//! [3]
+
+//! [4]
+QSize RenderArea::sizeHint() const
+{
+    return QSize(232, 232);
+}
+//! [4]
+
+//! [5]
+void RenderArea::paintEvent(QPaintEvent *event)
+{
+    QPainter painter(this);
+    painter.setRenderHint(QPainter::Antialiasing);
+    painter.fillRect(event->rect(), QBrush(Qt::white));
+
+    painter.translate(66, 66);
+//! [5]
+
+//! [6]
+    painter.save();
+    transformPainter(painter);
+    drawShape(painter);
+    painter.restore();
+//! [6]
+
+//! [7]
+    drawOutline(painter);
+//! [7]
+
+//! [8]
+    transformPainter(painter);
+    drawCoordinates(painter);
+}
+//! [8]
+
+//! [9]
+void RenderArea::drawCoordinates(QPainter &painter)
+{
+    painter.setPen(Qt::red);
+
+    painter.drawLine(0, 0, 50, 0);
+    painter.drawLine(48, -2, 50, 0);
+    painter.drawLine(48, 2, 50, 0);
+    painter.drawText(60 - xBoundingRect.width() / 2,
+                     0 + xBoundingRect.height() / 2, tr("x"));
+
+    painter.drawLine(0, 0, 0, 50);
+    painter.drawLine(-2, 48, 0, 50);
+    painter.drawLine(2, 48, 0, 50);
+    painter.drawText(0 - yBoundingRect.width() / 2,
+                     60 + yBoundingRect.height() / 2, tr("y"));
+}
+//! [9]
+
+//! [10]
+void RenderArea::drawOutline(QPainter &painter)
+{
+    painter.setPen(Qt::darkGreen);
+    painter.setPen(Qt::DashLine);
+    painter.setBrush(Qt::NoBrush);
+    painter.drawRect(0, 0, 100, 100);
+}
+//! [10]
+
+//! [11]
+void RenderArea::drawShape(QPainter &painter)
+{
+    painter.fillPath(shape, Qt::blue);
+}
+//! [11]
+
+//! [12]
+void RenderArea::transformPainter(QPainter &painter)
+{
+    for (int i = 0; i < operations.size(); ++i) {
+        switch (operations[i]) {
+        case Translate:
+            painter.translate(50, 50);
+            break;
+        case Scale:
+            painter.scale(0.75, 0.75);
+            break;
+        case Rotate:
+            painter.rotate(60);
+            break;
+        case NoTransformation:
+        default:
+            ;
+        }
+    }
+}
+//! [12]
diff --git a/examples/painting/transformations/renderarea.h b/examples/painting/transformations/renderarea.h
new file mode 100644
index 0000000..04ab0d3
--- /dev/null
+++ b/examples/painting/transformations/renderarea.h
@@ -0,0 +1,91 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef RENDERAREA_H
+#define RENDERAREA_H
+
+#include <QFont>
+#include <QList>
+#include <QPainterPath>
+#include <QRect>
+#include <QWidget>
+
+QT_BEGIN_NAMESPACE
+class QPaintEvent;
+QT_END_NAMESPACE
+
+//! [0]
+enum Operation { NoTransformation, Translate, Rotate, Scale };
+//! [0]
+
+//! [1]
+class RenderArea : public QWidget
+{
+    Q_OBJECT
+
+public:
+    RenderArea(QWidget *parent = 0);
+
+    void setOperations(const QList<Operation> &operations);
+    void setShape(const QPainterPath &shape);
+
+    QSize minimumSizeHint() const;
+    QSize sizeHint() const;
+
+protected:
+    void paintEvent(QPaintEvent *event);
+//! [1]
+
+//! [2]
+private:
+    void drawCoordinates(QPainter &painter);
+    void drawOutline(QPainter &painter);
+    void drawShape(QPainter &painter);
+    void transformPainter(QPainter &painter);
+
+    QList<Operation> operations;
+    QPainterPath shape;
+    QRect xBoundingRect;
+    QRect yBoundingRect;
+};
+//! [2]
+
+#endif
diff --git a/examples/painting/transformations/transformations.pro b/examples/painting/transformations/transformations.pro
new file mode 100644
index 0000000..a8ff610
--- /dev/null
+++ b/examples/painting/transformations/transformations.pro
@@ -0,0 +1,11 @@
+HEADERS     = renderarea.h \
+              window.h
+SOURCES     = main.cpp \
+              renderarea.cpp \
+	      window.cpp
+
+# install
+target.path = $$[QT_INSTALL_EXAMPLES]/painting/transformations
+sources.files = $$SOURCES $$HEADERS $$RESOURCES $$FORMS transformations.pro
+sources.path = $$[QT_INSTALL_EXAMPLES]/painting/transformations
+INSTALLS += target sources
diff --git a/examples/painting/transformations/window.cpp b/examples/painting/transformations/window.cpp
new file mode 100644
index 0000000..7d83654
--- /dev/null
+++ b/examples/painting/transformations/window.cpp
@@ -0,0 +1,181 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtGui>
+
+#include "window.h"
+
+//! [0]
+Window::Window()
+{
+    originalRenderArea = new RenderArea;
+
+    shapeComboBox = new QComboBox;
+    shapeComboBox->addItem(tr("Clock"));
+    shapeComboBox->addItem(tr("House"));
+    shapeComboBox->addItem(tr("Text"));
+    shapeComboBox->addItem(tr("Truck"));
+
+    QGridLayout *layout = new QGridLayout;
+    layout->addWidget(originalRenderArea, 0, 0);
+    layout->addWidget(shapeComboBox, 1, 0);
+//! [0]
+
+//! [1]
+    for (int i = 0; i < NumTransformedAreas; ++i) {
+        transformedRenderAreas[i] = new RenderArea;
+
+        operationComboBoxes[i] = new QComboBox;
+        operationComboBoxes[i]->addItem(tr("No transformation"));
+        operationComboBoxes[i]->addItem(tr("Rotate by 60\xB0"));
+        operationComboBoxes[i]->addItem(tr("Scale to 75%"));
+        operationComboBoxes[i]->addItem(tr("Translate by (50, 50)"));
+
+        connect(operationComboBoxes[i], SIGNAL(activated(int)),
+                this, SLOT(operationChanged()));
+
+        layout->addWidget(transformedRenderAreas[i], 0, i + 1);
+        layout->addWidget(operationComboBoxes[i], 1, i + 1);
+    }
+//! [1]
+
+//! [2]
+    setLayout(layout);
+    setupShapes();
+    shapeSelected(0);
+
+    setWindowTitle(tr("Transformations"));
+}
+//! [2]
+
+//! [3]
+void Window::setupShapes()
+{
+    QPainterPath truck;
+//! [3]
+    truck.setFillRule(Qt::WindingFill);
+    truck.moveTo(0.0, 87.0);
+    truck.lineTo(0.0, 60.0);
+    truck.lineTo(10.0, 60.0);
+    truck.lineTo(35.0, 35.0);
+    truck.lineTo(100.0, 35.0);
+    truck.lineTo(100.0, 87.0);
+    truck.lineTo(0.0, 87.0);
+    truck.moveTo(17.0, 60.0);
+    truck.lineTo(55.0, 60.0);
+    truck.lineTo(55.0, 40.0);
+    truck.lineTo(37.0, 40.0);
+    truck.lineTo(17.0, 60.0);
+    truck.addEllipse(17.0, 75.0, 25.0, 25.0);
+    truck.addEllipse(63.0, 75.0, 25.0, 25.0);
+
+//! [4]
+    QPainterPath clock;
+//! [4]
+    clock.addEllipse(-50.0, -50.0, 100.0, 100.0);
+    clock.addEllipse(-48.0, -48.0, 96.0, 96.0);
+    clock.moveTo(0.0, 0.0);
+    clock.lineTo(-2.0, -2.0);
+    clock.lineTo(0.0, -42.0);
+    clock.lineTo(2.0, -2.0);
+    clock.lineTo(0.0, 0.0);
+    clock.moveTo(0.0, 0.0);
+    clock.lineTo(2.732, -0.732);
+    clock.lineTo(24.495, 14.142);
+    clock.lineTo(0.732, 2.732);
+    clock.lineTo(0.0, 0.0);
+
+//! [5]
+    QPainterPath house;
+//! [5]
+    house.moveTo(-45.0, -20.0);
+    house.lineTo(0.0, -45.0);
+    house.lineTo(45.0, -20.0);
+    house.lineTo(45.0, 45.0);
+    house.lineTo(-45.0, 45.0);
+    house.lineTo(-45.0, -20.0);
+    house.addRect(15.0, 5.0, 20.0, 35.0);
+    house.addRect(-35.0, -15.0, 25.0, 25.0);
+
+//! [6]
+    QPainterPath text;
+//! [6]
+    QFont font;
+    font.setPixelSize(50);
+    QRect fontBoundingRect = QFontMetrics(font).boundingRect(tr("Qt"));
+    text.addText(-QPointF(fontBoundingRect.center()), font, tr("Qt"));
+
+//! [7]
+    shapes.append(clock);
+    shapes.append(house);
+    shapes.append(text);
+    shapes.append(truck);
+
+    connect(shapeComboBox, SIGNAL(activated(int)),
+            this, SLOT(shapeSelected(int)));
+}
+//! [7]
+
+//! [8]
+void Window::operationChanged()
+{
+    static const Operation operationTable[] = {
+        NoTransformation, Rotate, Scale, Translate
+    };
+
+    QList<Operation> operations;
+    for (int i = 0; i < NumTransformedAreas; ++i) {
+        int index = operationComboBoxes[i]->currentIndex();
+        operations.append(operationTable[index]);
+        transformedRenderAreas[i]->setOperations(operations);
+    }
+}
+//! [8]
+
+//! [9]
+void Window::shapeSelected(int index)
+{
+    QPainterPath shape = shapes[index];
+    originalRenderArea->setShape(shape);
+    for (int i = 0; i < NumTransformedAreas; ++i)
+        transformedRenderAreas[i]->setShape(shape);
+}
+//! [9]
diff --git a/examples/painting/transformations/window.h b/examples/painting/transformations/window.h
new file mode 100644
index 0000000..f4f05d6
--- /dev/null
+++ b/examples/painting/transformations/window.h
@@ -0,0 +1,81 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the examples of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef WINDOW_H
+#define WINDOW_H
+
+#include <QList>
+#include <QPainterPath>
+#include <QWidget>
+
+#include "renderarea.h"
+
+QT_BEGIN_NAMESPACE
+class QComboBox;
+QT_END_NAMESPACE
+
+//! [0]
+class Window : public QWidget
+{
+    Q_OBJECT
+
+public:
+    Window();
+
+public slots:
+    void operationChanged();
+    void shapeSelected(int index);
+//! [0]
+
+//! [1]
+private:
+    void setupShapes();
+
+    enum { NumTransformedAreas = 3 };
+    RenderArea *originalRenderArea;
+    RenderArea *transformedRenderAreas[NumTransformedAreas];
+    QComboBox *shapeComboBox;
+    QComboBox *operationComboBoxes[NumTransformedAreas];
+    QList<QPainterPath> shapes;
+};
+//! [1]
+
+#endif